For causal LTI systems with transfer func- tions listed below, find the zeros and poles and state whether or not each system is stable with a brief jus- tification for why. If the system is stable, find the impulse response for the system. a.) b.) a(z) = (2): = 222 +5.52 +3.75 z2+0.35z 1.125 - 222 +2.52 +3.75 22 +0.35z 1.125 - c.) d.) c(z) = 2.5z +0.5z 2 +0.2z - 0.08 a(z) = 2 + 5z 12z-4 (z) = 1.5z + 2z z2 +0.4z +0.13